package com.fcgzs.oss;

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.common.utils.BinaryUtil;
import com.aliyun.oss.model.MatchMode;
import com.aliyun.oss.model.PolicyConditions;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.Map;

/**
 * @Auther: ljj
 * @Date: 2021/08/23 10:23
 * @Description:
 */
@RestController
@RequestMapping("/thirdparty/v1/admin/oss")
public class OSSController {

    @Value("${spring.cloud.alicloud.access-key}")
    private String accessId;

    @Value("${spring.cloud.alicloud.secret-key}")
    private String accessSecret;

    @Value("${spring.cloud.alicloud.oss.endpoint}")
    private String endpoint;

    @Value("${spring.cloud.alicloud.oss.bucket}")
    private String bucket;


    @RequestMapping("/getPolicy")
    public Map<String,String> getPolicy(){
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        String dir = dateFormat.format(new Date())+"/";

        //String accessId = LTAI5t7cxfWT7SkMKzvo69Hw; // 请填写您的AccessKeyId。
        String accessKey = "30nwXRtBOmpGC0MfQ6WVlxaHy0SqZg"; // 请填写您的AccessKeySecret。
        //String endpoint = oss-cn-beijing.aliyuncs.com; // 请填写您的 endpoint。
        //String bucket = fcgzs1; // 请填写您的 bucketname 。
        String host = "https://" + bucket + "." + endpoint; // host的格式为 bucketname.endpoint
        // callbackUrl为上传回调服务器的URL，请将下面的IP和Port配置为您自己的真实信息。
        //String callbackUrl = "http://88.88.88.88:8888";
        //String dir = "user-dir-prefix/"; // 用户上传文件时指定的前缀。

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessId, accessKey);

        try {
            long expireTime = 30;
            long expireEndTime = System.currentTimeMillis() + expireTime * 1000;
            Date expiration = new Date(expireEndTime);
            // PostObject请求最大可支持的文件大小为5 GB，即CONTENT_LENGTH_RANGE为5*1024*1024*1024。
            PolicyConditions policyConds = new PolicyConditions();
            policyConds.addConditionItem(PolicyConditions.COND_CONTENT_LENGTH_RANGE, 0, 1048576000);
            policyConds.addConditionItem(MatchMode.StartWith, PolicyConditions.COND_KEY, dir);

            String postPolicy = ossClient.generatePostPolicy(expiration, policyConds);
            byte[] binaryData = postPolicy.getBytes("utf-8");
            String encodedPolicy = BinaryUtil.toBase64String(binaryData);
            String postSignature = ossClient.calculatePostSignature(postPolicy);

            Map<String, String> respMap = new LinkedHashMap<String, String>();
            respMap.put("accessid", accessId);
            respMap.put("policy", encodedPolicy);
            respMap.put("signature", postSignature);
            respMap.put("dir", dir);
            respMap.put("host", host);
            respMap.put("expire", String.valueOf(expireEndTime / 1000));
            // respMap.put("expire", formatISO8601Date(expiration));
            return respMap;
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return null;
        }
    }
}
